---
id: CVE-2020-7598
title: >-
  minimist before 1.2.2 could be tricked into adding or modifying properties of
  Object.prototype using a "constructor" or "__proto__" payload.
summary: >-
  minimist before 1.2.2 could be tricked into adding or modifying properties of
  Object.prototype using a "constructor" or "__proto__" payload.
severity: medium
cvss: 5.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-1321
vendor: substack
product: minimist
affected:
  - minimist < 1.2.2
  - leap = 15.1
patched:
  - minimist 1.2.2
published: '2020-03-11'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T21:17:30.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-7598'
references:
  - url: 'http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html'
    label: report@snyk.io
  - url: 'https://snyk.io/vuln/SNYK-JS-MINIMIST-559764'
    label: report@snyk.io
  - url: 'http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://snyk.io/vuln/SNYK-JS-MINIMIST-559764'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - exploit-available
epss: 0.01931
epssPercentile: 0.7939
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/renewablehacking/CVE-2020-7598'
  checkedAt: '2026-10-08T22:12:29.990Z'
exploitAvailable: true
ingestedAt: '2026-10-08T22:11:53.711Z'
---

## Overview

minimist before 1.2.2 could be tricked into adding or modifying properties of Object.prototype using a "constructor" or "__proto__" payload.

## Affected

- `minimist < 1.2.2`
- `leap = 15.1`

## Remediation

Upgrade past the affected range:

- `minimist 1.2.2`